VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Tuesday, December 30, 2025
Stock Comparison
Amazon.com, Inc. vs CoStar Group, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Amazon.com, Inc.
AMZN · NASDAQ
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Amazon.com, Inc.'s moat claims, evidence, and risks.
View AMZN analysisCoStar Group, Inc.
CSGP · NASDAQ
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into CoStar Group, Inc.'s moat claims, evidence, and risks.
View CSGP analysisComparison highlights
- Moat score gap: Amazon.com, Inc. leads (87 / 100 vs 75 / 100 for CoStar Group, Inc.).
- Segment focus: Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)); CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)).
- Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
- Moat breadth: Amazon.com, Inc. has 10 moat types across 4 domains; CoStar Group, Inc. has 9 across 4.
Primary market context
Amazon.com, Inc.
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
US retail ecommerce marketplace and online retail (integrated fulfillment + membership shipping)
United States
Consumers and third-party merchants
Marketplace operator, retailer, and fulfillment provider
73.5%
CoStar Group, Inc.
Multifamily (Apartments.com Network)
Online multifamily rental marketplaces and advertising
United States
Two-sided (renters + property managers/owners)
Marketplace (subscription advertising + workflow tools)
39%
Side-by-side metrics
Moat coverage
Shared moat types
Amazon.com, Inc. strengths
CoStar Group, Inc. strengths
Segment mix
Amazon.com, Inc. segments
Full profile >Amazon Web Services (AWS)
Oligopoly
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
Oligopoly
Advertising Services (Amazon Ads / Retail Media)
Oligopoly
Other (healthcare, content licensing/distribution, shipping services, co-branded credit card agreements, etc.)
Competitive
CoStar Group, Inc. segments
Full profile >CoStar (commercial real estate info & analytics)
Oligopoly
Information Services (lease management software + international info)
Competitive
Multifamily (Apartments.com Network)
Oligopoly
LoopNet (commercial property marketing marketplace)
Oligopoly
Residential (Homes.com + OnTheMarket)
Oligopoly
Other Marketplaces (Ten-X, Land.com, BizBuySell, etc.)
Competitive
Want the full wide moat stocks list?
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View the moat stocks listCuration & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.